Lock for nuts and the like



W. S. PIERCE, 111.

LOCK FOR NUTS AND THE LIKE.

APPLICATIQN min DEC. 12, 1918.

1,343,334. y 121.161.1011 June 15,1920.

i UNITED STATES WINSLOW S. PIERCE, JR., OF BAYVILLE, NEW YORK.

LOCK FOR NUTS AND THE LIKE.

l Application filed December 12, 1918. i Serial IlTo. 266,386.

venting the accidental detachment of nuts,

washers and sleeves from bolts and the like, and has as its principalI object the provision of means for accomplishing the result mentioned, which shall be convenient and eflicient in operation and atthe same time be simple and inexpensive to manufacture.

The second object of my invention is to provide an improved locking pin.

Another object of my invention is to provide a bolt so designed that a locking pin may be readily inserted therein.

A further object of my'invention resides in a particular arrangement and combination of parts hereinafter described.

In thedrawing which accompanies and formsl a part of this disclosure:

Figure 1 is-'an elevational vview of a partly in section, illustrating a preferred embodiment of my invention.

Fig. 2 is an end view of the parts shown in Fig. l, part being sectioned and removedfor purposes of illustration.

Fig. 3 `is an elevational view of a bolt and nut having my invention applied thereto, but illustrating a different form of Vlocking spring. l 0

n the separate views, the same part is designated by the same reference character.

Referring in detail to the drawing, l isY a bolt threaded at one end in the usual manner and on which is threaded a nut 2 of a well known form. As will be seen in Figs. 1 and 2, nut 2 is cut away at various points around its outer edge to form opposed openings or recesses, such as 3, and the outer end of the bolt has a hole 4 drilledtherein.

It will be seen that when the-nut 2 hasbeen' screwed into the bolt l a sufficient distance,

a locking cotterpin, such as 5, may be passed through the hole 4 and two lof the opposed or alined recesses 3 which may be brought into proper relative posltion'with respect to boltv the hole 4, the nut 2 thus being prevented from turning in either direction. Accordlng to previous practice, the hole 4 has been made materially larger than the ordinaryV cotter pin used therewith, so that the pin may be readily passed in and out of the hole.

This has been practically' necessary for the Specification of Letters Patent. Patented June 15, 1920.

reason that 4the cotter pin is usually a splitv pin. According to my invention, however, I make the pin solid, and make it just suflicientlysmaller than the hole so that it may' conveniently be inserted therein, a push, lit being permissible. In this arrangement,

there is, consequently, a minimum tendency for the pin to work loose.A As afurther means for preventing the pin from dropping out in the course of ordinary usage, I pro-` vide a spring such as 6, one end of which is secured in a'small'hole 7 in the pin 5, the other end of the spring being fastened to a ring such as 8. The ring 8 has a hole therein'which is materially larger than the pin 5, so that the ring may bereadily passed on and off of the pin.` VAs shown in the' drawing, after the pin has been passed through the hole 4, the spring is brought over the end of the bolt or around the curved surface thereof and extended so as to pass the 'ring onto the end of the pin 5.'

The spring 6 is Vof such length that normally, asin the position shown in the drawing, or if passed around the curved surface of thebolt, therev is nov significant tension on the spring, but it is of such strength that a vmaterial force must be'applied to release the ring 8 from the end of the pin either by pulling on the head of the pin or by pulling on the ring.

' It has been found that considerable difliculty is often vexperienced in inserting a Cotter pin in the hole therefor and this difficulty would naturally be increased in using a solid instead of a split pin. Consequently I have marked the end of thebolt as indicated at 9 to show the line ofthe hole 4, and I believe this arrangement to be avnovel and valuable feature of my invention. v

Referring more particularly vto Fig. 3, the arrangement shown in `this ligure is identical .with thatl of Figs. `1 and 2, with the exoeptionthat in Fig. 3 I have shown a spring 6a made inl the'form of a loop and of such length. that it must be extended or "Cri stretched to pass over the end of the pin 5 when the samehas been passed through the hole 4C in the bolt.

It Will be understood that While I have shown and described the preferred embodi ment of my invention, that l do not Wish 4 t0 be limited to the exact details of the*u structure herein disclosed. Moreover, it will Vbe understood that parts of my' invention may be used Without using the Whole.

Having thus described my invention, I' claim: l, Y

1.The combination With a cotter pin having a portion constructed to pass through and projectQfrom the structure With Which the pin may be used, and resilient means VW'hereby said pin may be secured in locking position, said means When active engaging the outside surface of said projecting portion of the pin, said means and pin being so constructed and arranged that they are Vreleased from mutual engagement .at I said projecting portion by stress appliedv longitudinally of said pin Without damage to either. f Y

2. The combination With an apertured part of a retaining pin normallyY occupying an aperture insaid part and having both ends extending Without said aperture, and resilientmeans for securing said pin in said aperture, said means being attached near one end of said pin and held in a state of tension when activejby non-locking engagement with thesurface of the other end of said pin. Y

3. The combination With a cotter pin hav--Y ing a portion constructed to pass through and project from the structure With which the pin may be used, and resilient means whereby said pin may be secured in locling position, said means when active eiigaging the outside surface of said projecting ,portion of the pin.V

4. The combination with a retaining pin,

of spring means for securing said pin iinhaving' a substantially straight Vportion adapted, When the pin is in use, to extend through and project beyond the parts to be locked, means for securing said pin in locking position, said means when active *en-l gaging saidprojecting portion of. thel pin, said pin and means being so constructed andV arranged that they are released from mutual engagement at said projecting` portion by stress applied longitudinally of said pin Without Vdamage to either.

6. The combination With a bolt having a hole therethrough near one end, and a nut therefor Yhaving a plurality of opposed openings therein of a pin for said hole and openings having a spring secured to one.

end thereof, one end of said spring having a ring thereon designed to readily pass over the end of said pin when the pinv has been inserted inV said hole inthe bolt, said spring being of such lengthY that itis substantially relaxed after it hasfbeen passed over the end of said bolt and said ring passed onto said pin.

7. The combination With a pin of -a spring secured thereto near `one end, and a ring secured'to the free end of said spring, said ringvbeingV designed to passover one endof saidvpin. ,j

8.Tlie combination With a retaining pin having a vsubstantially straight portion adapted, when the pin is in use, to extend,

through and project beyondthe parts to be locked-,resilient means for securing said -pin in locking position, said means and pin being so constructed Vand arranged that they `are released from mutualvv engagement at.

said projecting portion by stress applied longitudinally of said pin Without damage to either. j j

9. The combination Withapertured parts, of a retaining pin for said parts normally occupying registering apertures therein and having both ends extending Without said apertures, and meansfor' securing said pin in locking position, said means fand pinbeing so constructed andarranged that they are released from mutual engagement at said projecting portion by stressy applied longitudinallyoi' said pin Without damage to either. v,

l0. The lcombination With apertured parts, of a retaining pin for ,said partsv normally-A occupying registering apertures therein, and having both ends extending Without ysaid apertures, and a spring secured near one V end off'said pin and'held in a statev of tension when active by non-locking engagement of its' other end With the surface of saidpin when the pin is in. j

11; The ,combination with an apertured structure of a cotter pin normally occupying an aperture in said structure land p rojecting beyond the -entirety ofv said strucizo ture at both ends when in use, and means Whereby'said pin may bev securedin locking position, said means When active engaging the outside surface .of oneof said projecting portions of-V the pin ,and being releasable Vtherefrom `by stressl applied longitudinally ofsaidy pin without damageto either,

l2. The combination with a cotter pin having a portion constructed to pass through an aperture in the structure With which the pin may be used and having 5 means for preventing the pin from slipping entirely through said aperture in the direction in Which said portion is passed thereinto, of releasable resilient means whereby said pinmay be secured in locking position, said resilient means When active engaging the outside surface of said portion of the pin and being released therefrom by deformation of said resilient means Within its elastic limit.

WIN SLOW S. PIERCE, JR. Y 

